<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="城市名称" prop="cityName">
        <el-input
          v-model="queryParams.cityName"
          placeholder="请输入城市名称"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="城市编号" prop="cityCode">
        <el-input
          v-model="queryParams.cityCode"
          placeholder="请输入城市编号"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="省份名称" prop="provinceName">
        <el-input
          v-model="queryParams.provinceName"
          placeholder="请输入省份名称"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['house:city:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['house:city:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['house:city:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['house:city:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="cityList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="城市ID" align="center" prop="cityId" />
      <el-table-column label="城市名称" align="center" prop="cityName" />
      <el-table-column label="城市编码" align="center" prop="cityCode" />
      <el-table-column label="所属省" align="center" prop="provinceCode">
        <template slot-scope="scope">
          <span>{{ getProvinceName(scope.row.provinceCode) }}</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['house:city:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['house:city:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    
    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改城市对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="城市名称" prop="cityName">
          <el-input v-model="form.cityName" placeholder="请输入城市名称" />
        </el-form-item>
        <el-form-item label="城市编码" prop="cityCode">
          <el-input v-model="form.cityCode" placeholder="请输入城市编码" />
        </el-form-item>
        <el-form-item label="所属省" prop="provinceCode">
          <el-select
            v-model="form.provinceCode"
            placeholder="请选择所属省"
            filterable
            remote
            :remote-method="remoteProvinceMethod"
            :loading="provinceLoading"
          >
            <el-option
              v-for="province in provinceOptions"
              :key="province.provinceCode"
              :label="province.provinceName"
              :value="province.provinceCode"
            />
          </el-select>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listCity, getCity, delCity, addCity, updateCity } from "@/api/house/city";
import { listProvince, listProvinceOptions } from "@/api/house/province";

export default {
  name: "City",
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 城市表格数据
      cityList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        cityName: null,
        cityCode: null,
        provinceCode: null,
        provinceName: null
      },
      // 表单参数
      form: {
        cityId: null,
        provinceCode: null,
        cityName: null,
        cityCode: null
      },
      // 表单校验
      rules: {
        cityName: [
          { required: true, message: "城市名称不能为空", trigger: "blur" }
        ],
        cityCode: [
          { required: true, message: "城市编号不能为空", trigger: "blur" }
        ],
        provinceCode: [
          { required: true, message: "省份编码不能为空", trigger: "blur" }
        ],
        provinceName: [
          { required: true, message: "省份名称不能为空", trigger: "blur" }
        ]
      },
      // 省份选项
      provinceOptions: [],
      provinceLoading: false, // 添加省份加载状态
    };
  },
  created() {
    this.getList();
    this.getProvinceOptions();
  },
  methods: {
    /** 查询城市列表 */
    getList() {
      this.loading = true;
      listCity(this.queryParams).then(response => {
        this.cityList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    /** 获取省份选项（用于下拉框） */
    getProvinceOptions() {
      listProvinceOptions().then(response => {
        this.provinceOptions = response.rows;
      });
    },
    /** 获取省份名称 */
    getProvinceName(provinceCode) {
      let province = this.provinceOptions.find(item => item.provinceCode === provinceCode);
      return province ? province.provinceName : '';
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    /** 表单重置 */
    reset() {
      this.form = {
        cityId: null,
        provinceCode: null,
        cityName: null,
        cityCode: null
      };
      this.resetForm("form");
    },
    /** 搜索按钮作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.cityId)
      this.single = selection.length!==1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加城市";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const cityId = row.cityId || this.ids
      getCity(cityId).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改城市";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.cityId != null) {
            updateCity(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addCity(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const cityIds = row.cityId || this.ids;
      this.$modal.confirm('是否确认删除城市编号为"' + cityIds + '"的数据项？').then(function() {
        return delCity(cityIds);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download('house/city/export', {
        ...this.queryParams
      }, `city_${new Date().getTime()}.xlsx`)
    },
    /** 远程搜索省份 */
    remoteProvinceMethod(query) {
      if (query !== '') {
        this.provinceLoading = true;
        listProvinceOptions({
          provinceName: query
        }).then(response => {
          this.provinceOptions = response.rows;
          this.provinceLoading = false;
        });
      } else {
        this.provinceOptions = [];
      }
    },
  }
};
</script> 